molstar
Version:
A comprehensive macromolecular library.
48 lines (47 loc) • 1.37 kB
JavaScript
/**
* Copyright (c) 2017 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* from https://github.com/dsehnal/CIFTools.js
* @author David Sehnal <david.sehnal@gmail.com>
*/
export function arrayFind(array, f) {
for (let i = 0, _i = array.length; i < _i; i++) {
if (f(array[i]))
return array[i];
}
return void 0;
}
export function iterableToArray(it) {
if (Array.from)
return Array.from(it);
const ret = [];
while (true) {
const { done, value } = it.next();
if (done)
break;
ret[ret.length] = value;
}
return ret;
}
/** Fills the array so that array[0] = start and array[array.length - 1] = end */
export function createRangeArray(start, end, ctor) {
const len = end - start + 1;
const array = ctor ? new ctor(len) : new Int32Array(len);
for (let i = 0; i < len; i++) {
array[i] = i + start;
}
return array;
}
export function arrayPickIndices(array, indices) {
const ret = new (arrayGetCtor(array))(indices.length);
for (let i = 0, _i = indices.length; i < _i; i++) {
ret[i] = array[indices[i]];
}
return ret;
}
export function arrayGetCtor(data) {
const ret = data.constructor;
if (!ret)
throw new Error('data does not define a constructor and it should');
return ret;
}